High Voltage PFT, PFT-1003CM Safety, Operation, And Procedure Instructions

PFT

SERIES

Safety , Operation, and Procedure In structions for the PFT Series of
AC Hipots

Please Refer to
Documentation

Before Operation

Danger- Lethal Voltages:

Equipment to be used by trained personnel only

This Operator Manual contains instructions for the operation of a High Voltage power source. The operator of this equipment
must use good judgement and follow all safety precautions noted in this guide to ensure the protection of himself and others in

close proximity to the test area. Failure to follow the instructions could result in injury or

death. Proper grounding of the test set must be done prior to connecting this unit
to a power source.

Operator Manual

Table of Contents

About the Operator Manual 1

SECTION 1
General Information 2
Features and Specifications 2-3
Controls and Indicators 4-5

SECTION 2
Setting up the Equipment 6
Operating the Equipment 7-10
Blank Page for Notes 11

SECTION 3
Performing Special Operations 12
Meter Re-calibration 12,13
Miscellaneous 14

Packing the Cables 14
Return Material 15

Warranty 16,17

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Last saved 1/29/2009

OPERATOR MANUAL

About the Operator Manual

Important

This Operator Manual describes the features and safe operation of a High
V oltage Test Set. The instructions are intended to be clear and simple, but
the operator must be trained and qualified according to established
procedures for the use of this type of equipment.

This Operator Manual is organized to provide information on the PFT Series of Hipots in steps that familiarize
the new operator with the operation of this test set.

Section 1: Specifications and Controls.
Section 2: Setup and Operation.
Section 3: Performing Special Operations.

The Functions, Features, and Spec ifications of the PFT Series of AC Hipots are also discussed in the PFT Brochure
available from High Voltage, In c.

- 1 -

SECTION

1

General Information

This section familiarizes the operator with the features and specifications of the
PFT Series of Power Frequency AC Test Sets manufactured by HIGH VOLTAGE, INC.

Fea tures and Specifications

The PFT Series of AC hipot test sets provide continuously adjustable output voltages for the GO/NO-GO
testing of high voltage insulation. Earlier versions of the PFT Series were equipped with operator controlled
capacitive compensation switches to minimize input primary currents. The new simplified controls incorporate
this feature transparently.

Standard features of the PFT Series of include:

• Continuously adjustable output voltage

• Fixed overload, factory set to 120% of variable transformer rated output current

• “Zero Start” and External Interlock provision

• Secondary connected dual-range voltmeter

• Shielded output cable (50 kV and below) precludes unnecessary insulated support of the cable

• One piece portable design (50 kV and below)

• Transit protected meters prevent meter damage between test sites

• Capacitive load compensation incorporated to allow up to 3 KVA output power with less than 15

Amperes input line current.

• Fault Burn Reactor (Optional)

2

PFT MODEL SPECIFICAT IONS

PFT-103

Table 1 PFT Series Specifications.

PFT-303

PFT-503

PFT-1003

SEE SPECIFICATIONS

ON LAST SHEET OF PARTS LIST

3

VOLTMETER

LOW HIGH

PLEASE REFER TO

DOCUMENTATION

BEFORE OPERATION

OUTPUT

GROUND

CURRENT RANGE

X10

LOAD

RETURN

X100

X1

RETURN

MODE

GUARDGROUND

MAIN

POWER

EXT

INPUT
FUSE

AC TEST SET PFT SERIES

INTLK

HIGH

VOLTAGEOFF ON

Figure 1 PFT Series front panel controls.

MAIN POWER

The MAIN POWER pushbutton switch provides the power to the control and power circuits. The neon lamp in
the switch will light when the power is on and voltage is available through the input line cord. The INPUT

FUSE located electrically before the MAIN POWER switch provides line fault protection for the unit.

EXT INTLK (EXTERNAL INTERLOCK)

The Ext Intlk connector is provided to allow for a normally open safety interlock switch to control the
energizing of the high voltage output.

HIGH VOLTAGE ON/OFF

The HIGH VOLTAGE ON and OFF pushbuttons control the high voltage power circuits. The red and green
LEDs provide life long positive indication of the circuit status. The red LED lights when high voltage is
energized and the green LED lights when the high voltage is de-energized.

OUTPUT CONTROL

The OUTPUT control variable transformer adjusts the output voltage. The 0-10 markings on the knob indicate
the low to high setting. The control must be at ZERO (0) to energize the high voltage circuits. The output

control must always be returned to zero at the completion of testing, prior to de-energizing the output

4

VOLTMETER AND RANGE SWITCH

The KILOVOLT METER and associated range switch allows for more accurate output voltage readings. 1-%
precision resistors minimize the need for re-calibration due to aging shift. See Voltmeter Re-calibration in
Section 3 for details on calibration.

CURRENT METER

The CURRENT METER is for accurate secondary load current readings. The range multiplier switch (X1,
X10, X100) allows readings to be taken as low as .1mA (5 divisions) and up to 100mA.

LOAD RETURN CONNECTOR

The LOAD RETURN connector is for the low side of the test load. It connects to the shielded return lead for
more accurate load current readings.

RETURN MODE

The RETURN MODE switch allows for accurate secondary load current readings. In the GUARD position, all
ground currents are shunted around the meter. The load must be isolated from ground to use in the GUARD
position. In the GROUND position, the return point is grounded and all currents (load and ground losses) are
metered.

BURN(OPTIONAL)

The BURN toggle is provided for tests when the load has faulted and the insulation must be further scored to
find the problem. The BURN feature will limit current on the output below the overload value and allow for
thorough marking of the fault area.

List of included components

 Black test lead with black boot for ground connections. (2 leads for PFT-1003)
 Ext. Intlk. Jumper plug
 Attached 20 ft. X-Ray shielded output cable (50kV and below)
 Alligator and hook connections for working end of output cable (50kV and below)
 20 ft. RG58/U coax return lead

5

SECTION

2

SETTING UP THE EQUIPMENT

The setup of this equipment has been minimized by careful consideration of the operator during design. The
PFT Series’ one-piece construction (50kV and below) minimizes misplaced components while allowing for
convenient portability.

1. Select a location for the unit that will allow easy viewing of the meters at a safe distance

from the test object.

2. Be sure that all the controls are off, in their de-energized or fully counterclockwise

position.

3. Secure a ground test lead to the panel. The Ground post on the front panel should be

used for that purpose. A black test lead with black boot has been provided for the ground
connection. A second ground lead is provided for two-piece units for the grounding of the high
voltage section.

4. Insert the EXT INTLK plug into the socket on the panel. The plug may also be

wired to a normally open contact of a safety switch for added protection. Hand-held safety
switches are available from High Voltage to plug directly into the EXT INTLK socket.

5. If applicable, connect the interconnect cable between the control and high

voltage section.

6. The red booted alligator clamp on the output cable is used to connect the output cable to the test

object. (50kV and below). Connection of the output toroid on the PFT-1003 high voltage section
to the load is accomplished by using a customer provided test lead or tubing (metallic) between
the toroid (HV output) and test object.

6